Cyber Resilience

CVE-2024-43027

HighPublic PoC

Published: 21 August 2024

Published
21 August 2024
Modified
03 June 2025
KEV Added
—
Patch
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CVSS Score v3.1 8.0 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0070 72.4th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-43027 is a high-severity Command Injection (CWE-77) vulnerability in Draytek Vigor300B Firmware. Its CVSS base score is 8.0 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 27.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

DrayTek Vigor 3900 before v1.5.1.5_Beta, DrayTek Vigor 2960 before v1.5.1.5_Beta and DrayTek Vigor 300B before v1.5.1.5_Beta were discovered to contain a command injection vulnerability via the action parameter at cgi-bin/mainfunction.cgi.

CWE(s)
CWE-77

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

The command injection vulnerability in the DrayTek router's web CGI endpoint (cgi-bin/mainfunction.cgi) via the 'action' parameter enables exploitation of a public-facing application (T1190) and remote execution of Unix shell commands (T1059.004).

Affected Assets

draytek
vigor300b firmware
≤ 1.5.1.5
draytek
vigor2960 firmware
≤ 1.5.1.5
draytek
vigor3900 firmware
≤ 1.5.1.5

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References